In order to ensure a safe working area, the building perimeter was covered with self-climbing HWS protection. The system is made of panels that envelop the storey under construction and three storeys below, equipped with a hydraulic system used for raising the assembly as construction proceeds upward.

To minimise assembly work on-site, the panels were pre-assembled in the ULMA facilities in New Jersey. They were designed so as to be of optimal size for transport while being wide enough to offer an efficient building solution in situ.